       Re: Examples using Trig option

• To: mathgroup at smc.vnet.net
• Subject: [mg35257] Re: Examples using Trig option
• From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
• Date: Fri, 5 Jul 2002 02:18:58 -0400 (EDT)
• Organization: Universitaet Leipzig
• References: <afugd0\$rr4\$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

```Hi,

In[]:=Expand[Sin[x]^2*Cos[2x], Trig -> #] & /@ {True, False}

Out[]={Cos[x]^2*Sin[x]^2 - Sin[x]^4, Cos[2*x]*Sin[x]^2}

??

Regards
Jens

"Ersek, Ted R" wrote:
>
> Hello  mathgroup,
>
> The usage message for Trig says:
>
> Trig is an option for algebraic manipulation functions which specifies
> whether trigonometric functions should be treated as rational functions of
> exponentials.
> ---------
>
> The built-in functions that have the Trig option are:
> Apart, ApartSquareFree, Cancel, Coefficient, CoefficientList, Collect,
> Denominator, Expand, ExpandAll, ExpandDenominator, ExpandNumerator,
> Exponent, Factor, FactorList, FactorSquareFree, FactorSquareFreeList,
> FactorTerms, FactorTermsList, FullSimplify, Numerator, PolynomialGCD,
> PolynomialLCM, PolynomialMod, Resultant, Simplify, Together.
>
> After searching all available documentation I can't find a single example of
> where
> f[expr, Trig->True]   would give a different result than
> f[expr, Trig->False], and I can't come up with one on my own. Can you give
> some examples. An example for each function above is not necessary.
>
> ---------
> Thanks,
>   Ted Ersek
>   Get Mathematica tips, tricks from
>   http://www.verbeia.com/mathematica/tips/Tricks.html

```

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